baber/WOPTO huggingface dataset:
Patent GB-997086-A (GB)
Title: Improvements in and relating to laminated building boards
Inventor: WALKER JOHN
IPC: B29C44/30
Filed: 1963-03-19
Abstract: 997,086. Laminates and laminating. IMPERIAL CHEMICAL INDUSTRIES Ltd. March 9, 1964 [March 19, 1963], No. 10810/63. Heading B5N. Laminates, comprising a core of foamed polyurethane between facing materials supplied as continuous webs or as discontinuous sheets in butted relation, are made by feeding the facing materials, e.g. 6, 9, to an extended longitudinal nip formed between conveyers 1, 2, supported by platens 3, 4, supplying a reactant polyurethane mixture to the lower facing material, and continuously heating the material both before entry to, and in, the nip to cause it to foam, set and bind to the facing sheets. The lower facing sheet may pass over a dispensing platform 11 above which a traversing or other mixing device 12 delivers the reactant mixture. Heating of the platform 11 and the conveyer 1, 2 may be effected as by radiant heaters 13, 14 or, as regards platform 11, by such heaters or hot air direction downwardly. The conveyers 1, 2 may be of stainless steel or woven fabric or wire. The facing materials may be flexible, e.g. of paper, paper board, metal sheet, metal foil, asbestos paper or sheet, or rubber, semi-rigid, e.g. of polyvinyl or other plastics sheets or resin-bonded glass fibre, or almost rigid, e.g. of melamine-, urea-, or phenol-formaldehyde, polystyrene, wood, plywood, plasterboard, asbestos cement, hardboard or fibreboard. Examples describe the use of a reactant mixture comprising a polyether resin, glycerol, diisocyano diphenyl methane and trichlorofluoro methane to produce cores between (a) paper boards, (b) aluminium sheets, and (c) gypsum wall board as the lower layer and paper as the upper respectively, overhead radiant heat being supplied to the dispensing platform for (a) and (c), and beneath and through a gap in the platform in the case of (b).
Patent GB-1390372-A (GB)
Title: Fixing of liquid toner developed electrogrphic images
IPC: G03G15/11
Filed: 1972-03-08
Abstract: 1390372 Fixing developed electrographic images VARIAN ASSOCIATES 8 March 1972 [5 April 1971] 10864/72 Heading G2H  A process for fixing a liquid toner developed electrographic image comprises passing an airstream over the image area so as to at least partially dry the image and subsequently applying radiant heat to the at least partially dried image to effect fixing. An electrographic web 3 comprising a conductive paper backing 4 and a dielectric film 5 is imaged at a station 2 whilst supported between a photo-conductive plate 6 (supported on a glass substrate 7) and a conductive backing plate 9. A potential is applied between a transparent electrode 8 (e.g. of tin oxide) and the plate 9 whilst the image to be recorded is projected on to the plate 6. The imaged web is severed at 17 and passed to a liquid development station where an electrically conductive perforated drum 21 is rotated at a greater velocity than the severed web portions to supply fresh toner to the image. Toner is supplied to the drum through a channel 22. The web portions then pass through squeegee rollers 26 to fixing station 27 through which they are guided by wire grids 34. Drying air is supplied from a blower 37 until the remanent liquid toner does not flow under the action of the air-stream. Subsequently the web sections are guided over infrared source 42 which fixes the developed images on the web 3. Polished reflectors 42, 43 and 44 shield the undried portions of the web section from the heat source.
Patent GB-918848-A (GB)
Title: Cam mechanisms
IPC: F16H25/16
Filed: 1959-03-31
Abstract: 918,848. Cam mechanism. SULZER FRERES S.A. March 31, 1959 [March 31, 1958], No. 10904/59. Class 80 (3). [Also in Group IX] The invention is concerned with means for eliminating the impact which would otherwise occur in a cam-follower linkage 17, 20 for driving a driven part, such as a heavy loomheald 28, due to play in and elasticity of the linkage, when the sense of acceleration is reversed, and consists in the provision of momentary double reversal in the sense of the acceleration of the driving part (cam follower 13) whilst the driven part 28 is moving freely and uniformly within the reversing play of the linkage, whereby contact by the driving part with the driven part in the opposite sense is re-established at zero acceleration and relative velocity, and subsequent reversal of the sign of the acceleration produces no impact. In Fig. 4 the driving member or cam follower 13 is represented by a hook 26 which reciprocates vertically, the driven heald 28 by the element 27, and the total play and elasticity in the linkage by the dimension a. v and p are the velocity and acceleration curves of the cam follower 26 as it is driven by the cam 11, Fig. 1, from its upper position at cam-angle 0 to its lower position at cam-angle #4. The cam follower 26 has positive acceleration p from 0 to approximately mid-stroke # 1 , and drives the driven member 27 at thrust faces 46. At # 1  the cam is profiled to produce negative acceleration of the follower 26, whereupon the driven member 27 breaks contact with the driver at 46 and, under its own inertia, continues to move freely and with uniform velocity between cam angles # 1  and # 3 . During such movement the cam re-applies positive acceleration to the driver 26 until at # 3  its velocity is again equal to that of the driven member 27, the play a is wholly reversed, and contact with the driven member is re-established in the opposite sense at its face 44, whereupon the c#m re-applies negative acceleration to the driver 26 to retard the driven member to rest at the lower point # 4 . The return upward sequence # 4  to # is similar but opposite in sign. In the cam linkage in Fig. 1 the cam follower 13 is maintained permanently in contact with the cam during negative acceleration by a spring 16. Figs. 5 and 6 (not shown), for the weft feeder of a gripper shuttle loom, use a positive return cam comprising an axially undulating groove in a cylindrical drum. The groove has abrupt steps at each end, to hold a follower lever against fixed stops during dwell angles, and the transition between change of sign of acceleration is obtained as above described. Two halves of a cam drum, each containing one wall of the groove may be relatively circumferentially adjustable to provide different degrees of play compensation. A method of setting out the cam profile is described.
Patent GB-1340934-A (GB)
Title: Control devices for fuel injection systems for mixture-compres sing internal combustion engines with applied ignition
IPC: F02M69/28
Filed: 1971-04-23
Abstract: 1340934 Regulating I C engine fuel injection ROBERT BOSCH GmbH 23 April 1971 [24 April 1970] 10986/71 Heading F1B [Also in Division F2] A fuel metering valve 14 for controlling fuel flow to intake pipe or manifold injectors is actuated by an air flow measuring element 4 in series with a throttle valve 7 in the intake pipe 3, 5, 6. A by-pass 26 around the element 4 has a valve 28, Fig 1, or 37, Fig. 5, which controls the flow cross-section of the by-pass as a function of engine operation. The valve 28 is angularly adjustable with the valve 7 and has a profiled edge 29, Fig.2 (not shown), which provides for increasing covering of the opening 27 with increasing throttle valve opening to thereby decrease the air flow by-passing the element 4 and increase the fuel-air ratio of the mixture supplied to the engine. The valve 37 is angularly adjustable with the valve 7 and movable along the valve shaft by a temperature sensor 40, subject to the flow of engine coolant through a chamber 44, to vary the alignment of triangular openings 41 and 42 in the valve 37 and the bypass 26. The valve 37 may be movable along the shaft as a function of engine temperature and the pressure downstream of the valve 7 or hydraulically as a function of the engine speed, load and temperature. A connection 46, 48 from the valve chamber 43 to the induction pipe 6 downstream of the valve 7 is controlled by a piston 49 or a diaphragm to provide a by-pass around the valve 7 which is closed at overrunning but open at idling. The flow cross-section of the bypass 26 may be controlled by the profiled outer side (31) Fig. 3 and 4 (not shown), of a valve (28) angularly adjustable with the valve 7 and variably spaced from a rectangular opening (32) in the by-pass. The by-pass is connected upstream of the opening (32) to the valve chamber (33) by a passage (34) with an idling air adjustment screw (35).
Patent GB-349709-A (GB)
Title: Improved device for supporting one end of a coiled compression spring
IPC: F16F1/12
Filed: 1930-04-07
Abstract: 349,709. Valve components. KENYON, E. A., 30, Brynton Road, Rusholme, Manchester, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Bush House, Aldwych, London. April 7, 1930, No. 11002. [Class 135.] Spindles.-A device for supporting one end of a helical compression spring comprises a cupped disc provided with a central orifice having a slot extending therefrom to the edge of the disc, and adapted to be slipped laterally on to a reduced portion of a rod around which the spring is disposed, and to be secured against lateral withdrawal by the end of the spring which is received within the cupped disc. The invention is described as applied to the contact-finger 5 of a motor controller. The contact-finger 5 is pivoted at 5a to a frame 7. Secured to the frame 7 and passing through a slot 10 in the finger 5 is a rod 6 on which a washer 9 is threaded. A compression spring 4 is threaded on the rod 6 and compressed to allow a cupped washer 1 to be slipped laterally on to the rod 6 so that a slot 2 on the washer 1 engages a reduced portion 8 on the rod 6. The spring 4 is then allowed to expand so that its outer end fits into the cupped washer 1 and prevents it from being laterally withdrawn. A washer or equivalent member may be fitted to the end of the spring to engage the cupped washer 1 to prevent its lateral withdrawal.
Patent GB-610578-A (GB)
Title: Improvements in and relating to drying machines
IPC: F26B11/18
Filed: 1946-04-10
Abstract: 610,578. Air circulation in drying chambers. MILNE, A. M., and FREEMAN, C. B. April 10, 1946, No. 11038. [Class 34(ii)] In laundry drying machines of the type comprising a perforated drum 4 rotatable within a housing 5 through which heated air is passed, the air inlet 8 is situated preferably at the top of the casing and the inlet duct 15 is arranged around the outside of the casing whereby heat is imparted the incoming air passing therethrough before reaching the main heater 14 and fan 7. An air filter or lint screen 16 may be provided.
Patent GB-110730-A (GB)
Title: Improvements in or relating to Telegraph Systems.
IPC: H04L17/12
Filed: 1917-08-01
Abstract: 110,730. Automatic Telephone Manufacturing Co., and Harrison, H. H. Aug. 1, 1917. Automatic telegraphs.-An automatic telegraph comprising a perforator key-board and a tape transmitter is provided with a manually operated switch and a relay by means of which, when the perforating operation ceases, the transmitter is stopped after the impulses of a complete letter have been sent to line. An alarm, operated by the tape, is sounded when the amount of tape between the perforator and the transmitter is reduced to a pre-determined value. In the arrangement shown, the perforator P is provided with a switch SSK which controls the circuit of one winding of a differential relay R. The arm RBA of a rotary distributor D bridges a contact segment q and a contact tc, after the impulses of a complete letter have been sent to line, thereby energizing both windings of the relay R as follows : battery B<1>, segment q, contact tc, lead C<2> to terminal X where the current divides, part passing through the lead C', switch SSK, lead C, left hand winding of relay R, and part passing through the contact springs 1, 2 and the right-hand winding of the relay R. Under this condition, the relay R is not energized and the magnet of the transmitter T is only momentarily energized. When the switch SSK is operated to disconnect the leads C, C<1>, the left hand winding of the relay R is not energized and the energization of the right-hand winding causes the relay R to operate to connect the spring-contacts 1, 3 and to disconnect the spring contacts 1, 2. The closure of the contacts 1, 3 completes a locking circuit for the relay R from a battery B<2> through the right-hand winding of the relay R and the transmitter magnet is energized to stop the transmitter. To start the transmitter, the switch SSK is restored to the position shown so that, when the arm RBA bridges the contacts q, to the relay R is de-energized and the transmitter restored to its operative condition. An alarm AB, the circuit of which is controlled by the tape S through a bell-crank lever BC, may be provided.
Patent GB-1107562-A (GB)
Title: External surface broaching machine
IPC: B23F21/26
Filed: 1965-03-16
Abstract: 1,107,562. Gear-cutting. NATIONAL BROACH & MACHINE CO. 16 March, 1965 [28 May, 1964], No. 11087/65. Headings B3B and B3L. Broaching apparatus comprises an elongated work support 10 having a free end on which the work is mounted, an elongated tubular broach 80 movable over the work and a broach support 64 having a lateral opening 116 for removal of the workpiece. The work support 10 carries a work-engaging plug 28 and is formed with lubricant passages 44, 26, 16, 14. Its work-supporting face 38 is grooved to accommodate chips. Chips are continually flushed away to a magnetic separator. The borach is as described in Specification 1,107,563 and has means for locating it relatively to the workpiece. The broach assembly carries rails 125 which are bevelled at their ends 130 to engage a finished workpiece as the assembly descends. The rails are thus cammed outwardly about pivots 126 and are snapped back beneath the gear by springs 128. The gear is then carried up with the assembly on a return stroke. It is subsequently ejected through the lateral opening 116 by a fluid-operated plunger 124 into a shoot containing a sensing device (138).
Patent GB-1509451-A (GB)
Title: Electrical installation comprising frequency changers
IPC: H02M5/27
Filed: 1975-03-17
Abstract: 1509451 Frequency changing SIEMENS AG 17 March 1975 [29 March 1974 22 Jan 1975 3 March 1975] 11091/75 Heading H2F In a combination of frequency changers, e.g. for feeding an A.C. motor 6, an odd number m of frequency changers 1, 2, 3 or inverters are connected in a symmetrical m-phase star arrangement. At least one of said frequency changers (3) is provided with a control loop arranged so that the output voltage follows a trapezoidal reference waveform so that, when used with a balanced load 6, a corresponding voltage appears across the output of the other frequency changers. No direct connection is made between the load and the star point Mu so that at least two of the frequency changers 1, 2 are provided with current control loops so that the line currents are sinusoidal. As described, direct or intermediate D.C. frequency changers 1, 2, 3 are connected via transformer 4 to threephase mains 5. The outputs are connected in star with reference to a point Mu for feeding a synchronous or asynchronous motor 6 the star point Mm of which is not directly connected to the star point Mu. Frequency changer 3 is provided with a voltage control loop which monitors the voltage between load terminal T and the star point Mu and compares it with a trapezoidal reference waveform U3 of adjustable voltage; the error from comparator 19 is fed to a voltage controller 18 so as to determine the conduction angle of the frequency changer 3. Frequency changers 1 and 2 have current control loops respective to the difference between currents I1 and I2 and a sinusoidal reference current I1* and I2*. The mth (third, sixth, ninth &c.) harmonics in the currents cancel because of the balanced load 6. The use of a trapezoidal rather than sinusoidal voltage waveform enables greater fundamental output components to be achieved with given thyristors and is stated to improve the input voltage/ current phase relationship for the fundamental. Modifications.-In Fig. 7 (not shown) the trapezoidal voltage waveform for controlling the output voltage of converter 3 is derived by monitoring the voltage across one of the load terminals and the load neutral point and applying to a multiplier/limiter arrangement so as to clip off a portion of each half cycle lying between 37À5 and 142À5 degrees. The amplitude of this arrangement is regulated by rectifying the voltage between one load terminal and the load star point and comparing it with a desired reference (DC).
Patent GB-677637-A (GB)
Title: Improvements in or relating to electrical pull magnets
Inventor: NEILSON CHRISTOPHER BERNARD VE
IPC: F16K31/06
Filed: 1949-04-26
Abstract: A silver solder having a melting point of about 630 DEG C comprises 50 per cent sliver, 15.5 per cent copper, 16.5 per cent zinc and 18 per cent cadmium.  A solder having a melting point of 778 DEG C comprises 61 per cent silver, 28.5 per cent copper, and 10.5 per cent zinc.
Patent GB-270891-A (GB)
Title: Improvements relating to tubes for heat exchangers
IPC: F28F1/00
Filed: 1926-04-27
Abstract: 270,891. Serck Radiators, Ltd., and Serck, O. April 27, 1926. Drawings to Specification. Metal tubes.-Tubes in heat exchangers such as motor vehicle and air craft radiators, oil coolers &c. of the kind in which the ends are brought into polygonal form in order that adjacent tubes may conveniently be secured together are formed of elliptical or approximately elliptical cross-section with an externally projecting longitudinal corrugation at each end of the minor axis. Specifications 208,136, 247,935 and 254,959, [all in Class 64 (iii), Surface apparatus &c.], are referred to.
Patent GB-459342-A (GB)
Title: Improvements in or relating to the manufacture of diazoamino compounds
Filed: 1936-04-17
Abstract: Diazoamino compounds are made by causing a diazo compound of an amine containing no solubilizing group to react with a primary or secondary amine of the benzene series containing a sulphonamide group which may be substituted and one or more carboxylic groups which are free or form a carbonyl-sulphimide ring with a neighbouring sulphonamide group or, alternatively, by causing a diazo compound of a primary amine of the benzene series containing a sulphonamide group which may be substituted and one or more carboxylic groups which are free or form a carbonyl-sulphimide ring with a neighbouring sulphonamide group to react with a primary aromatic amine containing no solubilizing group.  They are sparingly soluble in bicarbonates, alkaline acetates and carbonates but soluble in caustic alkalies and may be used for forming azo dyes by splitting up in acid media whereby the diazo compound of the amine containing no solubilizing group is obtained.  Pastes containing the diazoamino compounds and coupling components may be used in forming azo dyes on the fibre. Examples 3--7 and 10--12 describe the preparation of diazoamino compounds from the following components: diazotized 4 - chloro - o - toluidine, m - chloraniline, 1-methoxy-2-benzoylamino-4-chloro-5-aminobenzene, 2 : 5-dichloraniline, m- and p-nitroaniline, 4- or 5-chloro-2-toluidine and 4-chloro-2-anisidine; 1-carboxy-2-amino-4-sulphonamidobenzene, 1-carboxy-2-amino-3-methyl-4-sulphamidobenzene, 1 - carboxy - 2 - amino - 3 : 4-carbonylsulphimidobenzene, 3-sulphamido-1-phenylglycine, 1 - methyl - 4 - sulphamido - 2 - phenylglycine, 1 : 3-dimethyl-4-sulphamido-2-phenylglycine and 1 : 3-dimethyl-6-sulphamido-4-phenylglycine.  Examples 8 and 13--16 describe the printing of cotton by the usual methods, using the above diazoamino compounds and the o-toluidide, 2<1> - methyl - 4<1>-methoxyanilide, o-phenetidide and o-anisidide of 2 : 3-oxynaphthoic acid and diacetoacetyl-o-tolidine.  Specifications 320,324, 324,041, [both in Class 2 (iii)], and 433,878 are referred to.  Sulphonamides of the above type are prepared according to examples as follows: (1) 2-nitro-1 : 3-xylene is heated with chlorsulphonic acid, the 2 - nitro - 1 : 3 - xylene - 4 - sulphochloride obtained is condensed with ammonia or an amine, the amide oxidized with potassium permanganate and the product reduced to form 1-carboxy-2-amino-3 : 4-carbonylsulphimidobenzene; some 1-carboxy-2-amino-3-methyl-4-sulphamidobenzene is obtained from the filtrate; (2) 1 : 3-dimethyl-2-acetylamino-4-sulphamidobenzene is dissolved in presence of magnesium sulphate, oxidized with permanganate and the product hydrolyzed to the monocarboxysulphonamide; (9) 1-amino-2- or 3 - benzenesulphonamide is condensed with monochlor acetic acid to form 3-sulphamido-1-phenylglycine; other starting sulphonamides specified are 1-methyl-2-amino-4-benzenesulphonamide, 1 : 3-dimethyl-4-amino-6-benzenesulphonamide and 1 : 3-dimethyl-2-amino-4-benzenesulphonamide.
Patent GB-1315592-A (GB)
Title: Process for conversion of hydrogen sulphide into free sulphur
IPC: C01B17/04
Filed: 1971-04-23
Abstract: 1315592 Sulphur from hydrogen sulphide AMOCO PRODUCTION CO 23 April 1971 [7 Aug 1970] 11169/71 Heading C1A Free sulphur is formed from hydrogen sulphide contaminated with ammonia by introducing the contaminated hydrogen sulphide into the upstream section of a non-catalytic combustion zone where it is burned with a free oxygen containing gas to convert the H 2 S to SO 2  and H 2 O and the NH 3  to N 2  and H 2 O, combining these products with an essentially ammonia-free H 2 S feed in a downstream section of said zone whereby the ammonia-free H 2 S and SO 2  react non-catalytically to produce elemental sulphur in said down-stream section, thereafter separating said elemental sulphur from unconverted H 2 S and SO 2 , then reacting said unconverted H 2 S and SO 2  in a catalytic reaction zone to produce free sulphur, collecting the effluent from said reaction zone and recovering liquid sulphur from the resulting cooled effluent. The H 2 S and SO 2  in the mixture introduced into the catalytic reaction zone are present in a molar ratio of about 2: 1 for optimum operation. Preferably the H 2 S introduced into the upstream section of the combustion zone is not less than one-third of the total volume of H 2 S fed to the process and the amount of oxygen fed to the process corresponds to about 0À5 mol. for each mol. of the total volume of H 2 S employed and about 0À75 mol. for each mol. of NH 3  entering the combustion zone.
Patent GB-557637-A (GB)
Title: A collapsible boat or raft
IPC: B63B35/73
Filed: 1942-08-11
Abstract: 557,637. Collapsable boats and rafts. HARDWICKE, J. E., and HARDWICKE, J. H. Aug. 11, 1942, No. 11225. [Classes 113 (i) and 113 (ii)] A collapsable boat or raft comprises a base a of waterproof material to which are independently secured blocks b of compressible material encased in waterproof material. The base may be of linen or canvas, and the blocks, which are preferably rectangular, of flocculent material. The marginal blocks are spaced from the central blocks so as to assume automatically an upright position when the central part is loaded, and a cord is passed through internally arranged eyelets.